Update check-user-logged-in.md
Update check-user-logged-in.md

Moved `$this->zfcUserIdentity()->getAuthService();`docs from view helper to controller
claytondaley/ZfcUser,stijnhau/ZfcUser,nepda/ZfcUser,adamlundrigan/ZfcUser,zf2timo/ZfcUser,claytondaley/ZfcUser,adamlundrigan/ZfcUser,stijnhau/ZfcUser,nepda/ZfcUser,zf2timo/ZfcUser